apps/splitty is an example split application. It can be paired with slinky to form an application.
Split applications allow the user to build the application content separate from the library content by splitting an application into two pieces:
See split image architecture for the details of split image design.
splitty is just a simply app that has newtmgr, shell and blinkys the LED at a differernt rate than slinky, so its visually evident that its running.
You can use splitty as part of a split app by setting up your target.
targets/app
app=@apache-mynewt-core/apps/splitty
loader=@apache-mynewt-core/apps/slinky
bsp=@apache-mynewt-core/hw/bsp/nordic_pca10040
build_profile=optimized